Improvement in lamps



UN rTnn STATES PATENT Ormea.

JAMES S. ATTER'BURY ANI) THOS. B. ATTERBURY, OF FLTTSBURG, PA.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 38,087, dated April 7', 1863.

T0 all whom, t may concern:

Be it known that we, JAMES S. ATTERBURY' and THOMAS B. ATTERBURY, of Pittsburg, in the county of Allegheny and Stat-e of Pennsylvania, have invented a new and Improved Mode of Securing Metallic Hoops to the Necks of Glass Lamps and other Articles of Glassware; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, like letters in the several igures indicating the same or analogous part-s, and in which drawings- Figure l is a perspective view of a glass lamp having a metal hoop secured to its neck in accordance with our invention. Fig. 2 is an enlargedvview in section of the lamp-collar shown in Fig. l; and Figs. 3 and 4 are sectional views showing the metal hoop and neck of a lamp or other glassware applied together after our invention, but with the form of the metal hoop somewhat varying from that shown in Figs. l and 2. Figs. 5 and 6 are views indicating the mode of applying and securing the metal hoop to a lamp or other glassware while in the act of forming said ware.

Under the ordinary mode of manufacturing glass lamps, whether such lamps be footed or handled Y the brass collar or hoop is fast ened to them by cement. This is done by the dealers who purchase the lamp from the man ufacturer, as well as the brass collar or hoop to be fitted thereto, the lamp and the collar being separate when so purchased of the manufacturer.

Lamps as they are ordinarily delivered by the manufacturer to the dealer are packed in boxes containing from ten to twelve dozen each, and having no brass collars upon them must thereafter be unpacked for the purpose of having such collars tted and cemented to them before they are in condition to be putin the market by the retailer. By our invention the lamps are complete as they come from the hand of the manufacturer, and the brass collars being already on them no unpacking and fitting by the wholesale dealer is necessary. Much time and labor are thus saved', and the cost of the lamp to the public reduced.

In Figs. l and 3, A'indicates the body of a lamp; b, the peg; c, the neck, and d the brass collar secured to the neck and provided with a female screw to receive in the ordinary manner the screw-threaded base of the burner to be attached. The perimeter of the collar d we make in form as indica-ted in Figs. 2, 3, and 4, or in any equivalent manner-that is to say, the main portion of the collar below its ilange d may extend down perpendicular to said fiange, as in Fig. 42, or it may be formed Haring or curving outward, as indicated in Figs. 3 and 4, thus preventing the withdrawal of the collar from the neck. It will be seen, as represented in Figs. l, 2, 3, Yand 4, that the brass collar or hoop l comes in direct contact with the neck e, there being no intermediate cement or other like material to unite the collar or hoop to the glass neck, in which position it is firmly held simply by the contraction of the glass composing the neck c) in cooling immediately after the manufacture of thelamp. I n brief, the neck cis blown around the collar d in the manufacture of the lamp. The operation of so doing we will now de scribe in connection with Figs. 5 and 6. u

Fig. 5 is a sectional view of a lampanold. g is the peg. h is the hinge of the mold. d is the metallic hoop. E is the punty-plate or bottom plunger; F the body of the lamp.

Fig. 6 represents the puuty-plate or bottom plunger. d is the met-al hoop placed upon the panty-plate E.

To make our lamp, we iirst place the metallic hoop d upon the punty-plate, as shown in Fig. 2, whereupon the lamp-mold is placed upon the punty-plate, as shown in Fig. 5. The workman then gathers a mass of molten glass on the end of a hollow pipe, and after forming it into a suitable shape inserts it within the mold, Fig. 5, and blows the lamp therein, during which process that portion of the molten glass which forms the neck c is, in such melted state, blown around the metallic hoop d, and which glass, while cooling, contracts around the hoop, thereby holding it firmly to the lamp. In blowing the lamp or other article in the mold the air passes through the pipe, then through the peg g, Fig. 5, and after the article is blown and the pipe or glass attached to the pipe is broken off a small hole will be left through the peg g, which is stopped up by filling in hot glass. The lamp or other article blown is thus made upside down, or with the mold reversed from its position as practiced under the old mode of blowing like articles.

2 I Sfib Having thus described oui-invention in such molded or blown, the lamp so formed, when manner as will enable any person skilled in withdrawn from the mold, being,` Va complete the art to which it relates to practice it, what merchantable commodity in a single piece,

We claim as new, and desire to secure by Let\`| substantially as and for they purpose set forth. ters Patent of the United States, s-

Making in one piecea glass lamp and eoll. As a new article of manufacture, a glass lar7 substantially as set forth. lamp or other article of like material having i a metallic hoop or collar, al, applied thereto7 l substantially in the manner and for the purpose set forth. y

2. Attaching a metal hoop to the collar of a lamp While the lamp is in the act'of being J. S. ATTERBURY. T. B. ATTERBURY.

Vitnesses:

A. BURTT, A. B. STEVENsON. 

